JP4043787B2 - Reactor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reaction apparatus such as a molten salt electrolysis apparatus that handles a molten salt as a solvent at a high temperature.
[0002]
[Prior art]
Molten salt is used as a solvent in dry processing in the nuclear field, toxic gas processing systems in the environmental field, and the like. This molten salt undergoes various electrolytic reactions using, for example, the reaction apparatus shown in FIG. 6 to generate electrolytic products. A conventional reactor will be described with reference to FIG.
[0003]
In FIG. 6, reference numeral 1 denotes a container, and a flange 3 is attached to the upper end opening 2 of the container 1, and an upper lid 4 is placed on the upper surface of the flange 3 to seal the upper end opening 2. For example, a through hole 5 as a sampling port is formed in the upper lid 4, and a plug 7 is provided in the through hole 5 via a seal portion 6. A molten salt 8 is charged into the container 1, and the molten salt 8 is electrolyzed with other metals and compounds to produce electrolytic products.
[0004]
[Problems to be solved by the invention]
In the reaction apparatus using the molten salt 8, the molten salt 8 is handled at a high temperature, so that the volatile salt partially volatilizes and enters the gap between the through-hole 5 and the plug 7, and the plug 7 is pulled out. There is a problem that disappears.
[0005]
In particular, there is a problem that the reaction product or volatile salt adheres to the wall surface of the through hole 5 and the plug 7 as a sampling port, adheres and cannot be removed, and the sealing performance is impaired. For this reason, there is a demand for a reaction apparatus having a stopper structure that can prevent sticking due to volatile salts and maintain sealing performance.
[0006]
The present invention has been made to solve the above-described problems, and provides a reaction vessel having a stopper structure that prevents sticking of volatile salts to a seal portion, maintains sealing performance, is highly safe, and is easy to handle. There is to do.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 includes a container having an upper end opening, an upper lid that closes the upper end opening, a through hole formed in the upper lid, a tube portion that is airtightly attached to the through hole, It is characterized by comprising: a stopper closely provided at the upper end of the pipe part; and a seal part provided airtightly on the outer side of the pipe part and the inner surface of the stopper .
[0008]
According to the first aspect of the present invention, when the molten salt is volatilized at a high temperature, the volatile salt flows into the through-hole, but the upper surface of the pipe and the inner surface of the stopper are in close contact with each other, so Will not adhere. Therefore, the temperature of the seal portion can be lowered, the soundness of the seal member can be maintained, and the sealability and operability can be improved.
[0009]
The invention according to claim 2 is characterized in that, in claim 1, the stopper is provided with a handle.
According to the second aspect of the present invention, the stopper can be easily pulled out by providing the handle on the upper surface of the stopper. Therefore, the operability is improved, and the stopper can be easily pulled out even in an environment where the operability is poor such as handling with tweezers in the glove box, and the sampling operation is facilitated.
[0010]
According to a third aspect of the present invention, in the first aspect, the upper lid is provided with a cooling mechanism.
According to the invention of claim 3, by providing an air-cooling or water-cooling cooling mechanism on the upper lid, the cooling performance of the sealing portion is improved, the soundness of the sealing member can be maintained for a long period of time, and the sealing performance is improved. Can do.
[0011]
According to a fourth aspect of the present invention, in the first aspect, the stopper is provided with a volatile salt prevention member.
According to the invention of claim 4, since the volatile salt is trapped under the upper lid, the molten salt is prevented from adhering to the stopper, and when the stopper is opened, the volatile salt that causes the failure of the equipment outside. It is possible to improve safety.
[0012]
The invention according to claim 5 is characterized in that, in claim 4, the volatile salt prevention member is inserted into the through hole and is detachably provided in the stopper.
According to the invention of claim 5, since the stopper and the volatile salt prevention member can be easily disassembled, the stopper and the volatile salt prevention member can be easily cleaned, and maintenance is easy.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of a reaction apparatus according to the present invention will be described with reference to FIG. In FIG. 1, the same parts as those in FIG. That is, in FIG. 1, in the present embodiment, the upper end opening 2 of the container 1 into which the molten salt 8 in a molten state is charged is closed by the upper lid 4. The upper lid 4 is provided with a through hole 5 used for a sampling port or the like. And the pipe | tube 9 is provided in the through-hole 5, and the sealing plug 10 which covers the upper end opening of this pipe | tube 9 is provided. A seal portion 6 is provided on the inner surface of the hermetic seal 10 for hermetically sealing with the outer surface of the tube 9.
[0014]
In the present embodiment, the molten salt 8 charged into the container 1 is heated by a heater (not shown) and then dissolved to become a liquid, which causes a chemical reaction with other compounds in the liquid. Volatile salts are formed during heating or reaction. Volatile salt is trapped inside the tube 9 and the upper end surface of the tube 9 and the inner surface of the sealing plug 10 are in close contact with each other.
[0015]
According to the present embodiment, the seal plug 10 can be sealed by the tube 9 and the seal portion 6, and the operability of opening and closing the seal plug 10 is improved, and the sealability and opening and closing of the seal plug 10 and the tube 9 are easy. Thus, the operability of sampling can be improved.
[0016]
Next, a second embodiment of the reaction apparatus according to the present invention will be described with reference to FIG. In FIG. 2, the same parts as those in FIG. The present embodiment differs from the first embodiment in that a handle 11 is provided on the upper surface of the hermetic plug 10.
[0017]
According to this embodiment, even in an environment with poor operability such as tweezers work performed in a glove box, the stopper can be easily opened and closed with tweezers and the like, and the operability when opening and closing the sealed plug 10 is improved. can do.
[0018]
Next, a third embodiment of the reaction apparatus according to the present invention will be described with reference to FIG. In FIG. 3, the same parts as those in FIG. This embodiment is different from the first embodiment in that the upper lid 4 is provided with a cooling layer 12 of a cooling mechanism by air cooling or water cooling.
[0019]
In the present embodiment, the upper part from the upper lid 4 and the inside of the container 1 that is at a high temperature can be thermally isolated, and the tube 9 having the seal portion 6 can be kept at a low temperature. The soundness of the O-ring material of the seal portion 6 can be maintained. According to the present embodiment, the sealing performance can be improved.
[0020]
Next, a fourth embodiment of the reaction apparatus according to the present invention will be described with reference to FIG. In FIG. 4, the same parts as those in FIG.
In FIG. 4, this embodiment is different from the first embodiment in that a volatile salt preventing member 14 having a plate portion 13 on the lower surface is provided in the hermetic plug 10. The plate portion 13 is located at the lower end opening of the through hole 5.
[0021]
According to the present embodiment, the plate portion 13 of the volatile salt preventing member 14 can capture volatile salt and prevent the volatile salt from adhering to the inside of the tube 9 and the sealing plug 10. The adhesion of the volatile salt to the tube is prevented, and the sealing performance of the tube 9 and the sealing plug 10 can be improved.
[0022]
Next, a fifth embodiment of the reaction apparatus according to the present invention will be described with reference to FIG. In FIG. 5, the same parts as those in FIG. This embodiment is different from the fourth embodiment in that a volatile salt prevention member 15 is provided in the cap 10 so as to be detachable, for example, by fitting or screw structure.
[0023]
According to the present embodiment, since the sealing plug 10 and the volatile salt prevention member 15 can be disassembled, the sealing plug 10 can be reused by replacing or cleaning the volatile salt prevention member 15.
[0024]
【The invention's effect】
According to the present invention, by providing a tube in a through-hole such as a sampling port provided in the upper lid, and providing a seal portion on the outer surface of the tube and the inner surface of the seal plug, the sealing performance of the seal portion with the seal plug on the container In addition, the operability of the sealing plug can be improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a first embodiment of a molten salt reaction apparatus according to the present invention.
FIG. 2 is a longitudinal sectional view showing a second embodiment of the molten salt reaction apparatus according to the present invention.
FIG. 3 is a longitudinal sectional view showing a third embodiment of the molten salt reaction apparatus according to the present invention.
FIG. 4 is a longitudinal sectional view showing a fourth embodiment of the molten salt reaction apparatus according to the present invention.
FIG. 5 is a longitudinal sectional view showing a fifth embodiment of the molten salt reaction apparatus according to the present invention.
FIG. 6 is a longitudinal sectional view showing a conventional molten salt reactor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Upper end opening part, 3 ... Flange, 4 ... Top lid, 5 ... Through-hole, 6 ... Seal part, 7 ... Plug, 8 ... Molten salt, 9 ... Pipe, 10 ... Seal plug, 11 ... Handle, 12 ... Cooling layer, 13 ... Plate part, 14, 15 ... Volatile salt prevention member.

Claims (5)

A container having a top opening, and the upper lid for closing the upper opening, and a through hole formed in the upper cover, a tube portion attached to hermetically into the through hole, closely disposed on the upper end of the tube portion And a sealing portion provided in an airtight manner on the outer side of the tube portion and the inner surface of the stopper .   The reaction apparatus according to claim 1, wherein a handle is provided on the stopper.   The reaction apparatus according to claim 1, wherein a cooling mechanism is provided on the upper lid.   The reaction apparatus according to claim 1, wherein a volatile salt prevention member is provided on the stopper.   The reaction apparatus according to claim 4, wherein the volatile salt prevention member is inserted into the through hole and is detachably provided in the stopper.

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